Reported Reactions

Devices › Colonoscope and accessories, flexible/rigid

Device brand name · Maintenance unit

Maintenance Unit: medical device reports filed with FDA

419 reports name it, 2020–2026. Manufacturer given most often on reports: Shirakawa Olympus. Product code FDF.

419
device reports naming the brand
0% of all MAUDE reports · about 73 a year
76
reports, 12 months to August 2026
55 in the 12 months before
99.8%
classified as malfunction
98.1% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

FDA's MAUDE database holds 419 reports that name the brand "Maintenance Unit" (maintenance unit), received between October 2020 and August 2026; the manufacturer given most often on reports is Shirakawa Olympus. Spellings of one product vary from report to report.

76 reports arrived in the 12 months to August 2026, up 38% from 55 in the 12 months before. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases. The event types recorded are malfunction (99.8%) and injury (0.2%); across all colonoscope and accessories, flexible/rigid reports (product code FDF) death is recorded in 0.1% and malfunction in 98.1%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are break (53%), crack (13.8%) and failure to power up (6.4%). The patient problems coded most often are no patient involvement and electric shock. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Reports by month, five years

0815Sep 2021: 5Oct 2021: 2Nov 2021: 5Dec 2021: 92022Jan 2022: 4Feb 2022: 3Mar 2022: 9Apr 2022: 12May 2022: 7Jun 2022: 12Jul 2022: 5Aug 2022: 3Sep 2022: 4Oct 2022: 2Nov 2022: 4Dec 2022: 72023Jan 2023: 4Feb 2023: 8Mar 2023: 11Apr 2023: 9May 2023: 13Jun 2023: 5Jul 2023: 3Aug 2023: 6Sep 2023: 6Oct 2023: 9Nov 2023: 6Dec 2023: 82024Jan 2024: 3Feb 2024: 13Mar 2024: 13Apr 2024: 10May 2024: 7Jun 2024: 1Jul 2024: 9Aug 2024: 7Sep 2024: 11Oct 2024: 11Nov 2024: 2Dec 2024: 12025Jan 2025: 5Feb 2025: 3Mar 2025: 7Apr 2025: 6May 2025: 3Jun 2025: 0Jul 2025: 2Aug 2025: 4Sep 2025: 1Oct 2025: 8Nov 2025: 6Dec 2025: 52026Jan 2026: 3Feb 2026: 8Mar 2026: 15Apr 2026: 8May 2026: 6Jun 2026: 9Jul 2026: 6Aug 2026: 1

Reports by the month FDA received them. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases.

By year received

044882020: 1720202021: 4820212022: 7220222023: 8820232024: 8820242025: 5020252026: 562026

Event type and report source

Event type, as classified on the report

Death0%0
Injury0.2%1
Malfunction99.8%418
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%419
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 81,401 reports carrying product code FDF. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Breakthe device broke22253%6%
Crackthe device cracked5813.8%0.3%
Failure to power up276.4%0.1%
Electrical /electronic property probleman electrical or electronic problem245.7%0.2%
Power problem153.6%0%
Defective component112.6%0%
Detachment of device or device componentpart of the device came off102.4%2.1%
Material split, cut or torn102.4%0.4%
Loose or intermittent connection92.1%0.3%
Contamination81.9%1.5%
Electrical power problem71.7%0%
Failure to clean adequately71.7%28.5%
Connection problema connection problem51.2%0.3%
Material integrity problema problem with the device material51.2%0.1%
Mechanical problema mechanical problem51.2%0.2%
No visual prompts/feedback51.2%0%
Material separation41%0%
Corrodedthe device corroded30.7%1.6%
Defective devicethe device was defective30.7%0%
Degraded30.7%0.2%

FDA's device problem codes as entered on the report; one report can carry several. Generic codes such as "no apparent adverse event" are left out.

Patient problems coded

Patient problem (FDA code)ReportsShare
No patient involvement163.8%
Electric shockan electric shock10.2%

Patient problem codes are present mainly in reports filed since 2019 and are often blank.

In context

MeasureMaintenance UnitProduct code FDFAll MAUDE reports
Reports41981,40126,136,888
Share of that pool—0.5%0%
Classified as death, per 1,000 reports019
Classified as injury0.2%1.7%36.2%
Classified as malfunction99.8%98.1%62.3%
Filed by the manufacturer100%99.4%94.9%

Shares are of reports, not of devices in use. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Other brands with product code FDF

BrandReportsLatest 12 monthsClassified as death
Pentax47,2882,4430.1%
Evis Lucera Elite Colonovideoscope16,3699,6950%
Colonovideoscope9,4195,7120%
Evis Lucera Colonovideoscope2,1711,0190%
Evis Exera Lll Colonovideoscope1,05200.2%
PENTAX Medical1,3498070.3%
Olympus2,24092.5%
Evis Lusera Colonovideoscope411310%
Video System Center3,4318380%
Imagina26300%
CRE Wireguided718560.3%
Ultrasonic Gastrovideoscope1,8859020.2%
Visera Video System Center341730%
Ultrasonic Probe7872120.5%

Ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA also states that "common products may have a higher number of adverse events due to the higher total number of people using the product."

Questions about Maintenance Unit reports

How many FDA reports name Maintenance Unit?

419 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 76 in the latest 12 months.

What kinds of events are reported?

malfunction (99.8%) and injury (0.2%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

break (53%), crack (13.8%), failure to power up (6.4%), electrical /electronic property problem (5.7%) and power problem (3.6%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (100%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that Maintenance Unit was at fault?

No. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA adds that "a causal relationship cannot be established between product and reactions listed in a report."

How do I report a problem with a medical device?

Through FDA MedWatch (Form FDA 3500 for health professionals and consumers), or to the manufacturer. See the guide on how to report.

Where this comes from. Counts are built from the openFDA Device Adverse Event (MAUDE) bulk export released 28 Sep 2026, which holds reports FDA received through 31 Aug 2026. Brand, generic and manufacturer names are as written on the reports; product code names come from FDA's device classification. A report counts here when any device it lists carries this brand name after punctuation and capitalisation are normalised. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.